didn't used to do sth

2017年6月30日 - 是 used to do的否定是didn't use to do或usedn't to do。 used to do所表示的意思是“过去...

2014年3月13日 - Did he use to play football? Yes, I did. No, I didn’t. He didn’t use to smoke. 他过去不吸... used to do sth My favorite hobby is because I...